[Extensions API] Remove inline enums

chrome/common/extensions/api/debugger.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 [
   {
     "namespace": "debugger",
     "description": "The <code>chrome.debugger</code> API serves as an alternate transport for Chrome's <a href='https://developer.chrome.com/devtools/docs/debugger-protocol'>remote debugging protocol</a>. Use <code>chrome.debugger</code> to attach to one or more tabs to instrument network interaction, debug JavaScript, mutate the DOM and CSS, etc. Use the Debuggee <code>tabId</code> to target tabs with sendCommand and route events by <code>tabId</code> from onEvent callbacks.",
     "types": [
       {
         "id": "Debuggee",
         "type": "object",
         "description": "Debuggee identifier. Either tabId or extensionId must be specified",
         "properties": {
           "tabId": { "type": "integer", "optional": true, "description": "The id of the tab which you intend to debug." },
           "extensionId": { "type": "string", "optional": true, "description": "The id of the extension which you intend to debug. Attaching to an extension background page is only possible when 'silent-debugger-extension-api' flag is enabled on the target browser." },
           "targetId": { "type": "string", "optional": true, "description": "The opaque id of the debug target." }
         }
       },
       {
+        "id": "TargetInfoType",
+        "type": "string",
+        "description": "Target type.",
+        "enum" : ["page", "background_page", "worker", "other" ]
+      },
+      {
+        "id": "DetachReason",
+        "type": "string",
+        "description": "Connection termination reason.",
+        "enum": [ "target_closed", "canceled_by_user", "replaced_with_devtools" ]
+      },
+      {
         "id": "TargetInfo",
         "type": "object",
         "description": "Debug target information",
         "properties": {
           "type": {
-            "type": "string",
-            "description": "Target type.",
-            "enum" : ["page", "background_page", "worker", "other" ]
+            "$ref": "TargetInfoType",
+            "description": "Target type."
           },
           "id": { "type": "string", "description": "Target id." },
           "tabId": { "type": "integer", "optional": true, "description": "The tab id, defined if type == 'page'." },
           "extensionId": { "type": "string", "optional": true, "description": "The extension id, defined if type = 'background_page'." },
           "attached": { "type": "boolean", "description": "True if debugger is already attached." },
           "title": { "type": "string", "description": "Target page title." },
           "url": { "type": "string", "description": "Target URL." },
           "faviconUrl": { "type": "string", "optional": true, "description": "Target favicon URL." }
         }
       }
@@ skipping 130 matching lines @@
         "name": "onDetach",
         "type": "function",
         "description": "Fired when browser terminates debugging session for the tab. This happens when either the tab is being closed or Chrome DevTools is being invoked for the attached tab.",
         "parameters": [
           {
             "$ref": "Debuggee",
             "name": "source",
             "description": "The debuggee that was detached."
           },
           {
-            "type": "string",
+            "$ref": "DetachReason",
             "name": "reason",
-            "description": "Connection termination reason.",
-            "enum": [ "target_closed", "canceled_by_user", "replaced_with_devtools" ]
+            "description": "Connection termination reason."
           }
         ]
       }
     ]
   }
 ]